Process for producing pre-tensioned and pre-stressed concrete pile mold

Abstract

The invention relates to a process for producing a pre-tensioned and pre-stressed concrete pile mold and is applicable to production of pre-stressed and pre-tensioned concrete tubular piles. The process comprises the following steps of: firstly, preparing components, namely a matchboard, a tubular wall, longitudinal bars, annular bars, links, bolts, an end plate, an end connecting plate and running wheels; secondly, sequentially connecting all components, performing spot welding on all components into a whole, and thus obtaining half steel molds; and finally, combining the molds and performing finish machining. The process has the advantages that: the produced whole steel mold is small in cavity size error and good in straightness; the produced tubular pile or square pile is good in straightness; the smoothness of appearance is good, the whole longitudinal rigidity is good, and annular strength is improved; the whole coaxiality is ensured; and steel, processes and materials are saved, and the quality of produced products is higher.

Description

technical field [0001] The invention relates to the technical field of building material machinery manufacturing, in particular to a production process for pretensioned prestressed concrete pile molds for manufacturing prestressed pretensioned concrete pipe piles and square piles for construction. Background technique [0002] Prestressed centrifugal concrete pipe piles and square piles for construction use the pretensioned prestressed concrete pipe pile steel mold and square pile steel mold to rotate at high speed on the centrifuge, so that the pretensioned prestressed concrete pipe pile steel mold or square pile steel mold The concrete installed in the mold moves centrifugally at high speed with the mold to produce prestressed concrete pipe piles or square piles. Because it is convenient for large-scale industrial production and the produced prestressed concrete piles have good compactness, high strength and strong bearing capacity, they have been More and more alternative...

AI Technical Summary

Problems solved by technology

[0030] 1. The quality of steel mold products is not satisfactory:

[0031] The entire steel mold is usually connected by more than N (N≥2) single-section steel molds. There are joints between each single-section steel mold, and the number of joints is N-1. Since each steel mold is processed in sections , there are processing errors in turning, calibration, and assembly, and the accumulation of errors often leads to uneven joints at the joints of the final product, poor straightness of the product, and poor straightness of the produced pipe piles or square piles.

[0032] 2. The consumption of materials is large, especially the consumption of grinding wheels and welding materials

[0033] 3. The process is complex and the workload is large